[whatwg] Simplified <picture> element draft

[Kornel Lesiński]

> The advantage of the scheme that zcorpan proposed is that there is no magic 
> proxy; we just add a capability to <img> to select its source using more 
> than just a src attribute. This has better fallback than your design and is 
> easier to implement.

I believe that from testing perspective both approaches are equivalent.

The spec I propose *is* only another way to control src of an image.

The only difference is that I don't expose the <img> to scripts.

That may make it even simpler, because you can't have odd cases like author 
moving/removing the controlling img or setting values directly on img that 
conflict with picture's definitions.

-- 
regards, Kornel